Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 432-550-6 | CAS number: 243858-01-7
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From June 15, 1999 to June 16, 1999
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Decomposition:
- yes
- Decomp. temp.:
- 215 °C
- Conclusions:
- Under the conditions of the study, the DSC-measurements in closed glass pan showed no endothermic effect until the decomposition of the test item beginning at 215°C. The test substance has no melting point.
- Executive summary:
A study was conducted to determine the melting point of the test substance according to EU Method A.1, in compliance with GLP.
The test was carried out with the purified test substance. The determination of the melting point/melting range was carried out by differential scanning calorimetry (Mettler-Toledo TA8000).
Under the conditions of the study, the DSC-measurements in closed glass pan showed no endothermic effect until the decomposition of the test item beginning at 215°C.
The test substance has no melting point.
Reference
The measurement in a closed glass pan did not show any endothermic effect prior an exothermal effect in the range 140-205°C, with an energy of 42 J/g. At 215°C an exothermal decomposition was observed in the range 215-320°C, with a decomposition energy of 265 J/g. The test substance showed no melting point in the temperature range 25-400°C. Only an exothermic effect beginning at 140°C, followed by an exothermic decomposition beginning at 215°C, was observed.
Description of key information
The test substance has no melting point at atmospheric pressure (Smeykal, 1999).
Key value for chemical safety assessment
Additional information
The substance decomposes prior to melting
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
